Complete Solutions for  Commercial and Industrial Sectors.

WHY DAEL THERMAL? Trusted, Reliable Mechanical Company Since 1982

DAEL Thermal Group 35 years anniversary image

We provide complete solutions for the commercial and industrial environments.

DAEL’s solutions include HVAC, combustion, food industry expertise, refrigeration and chillers, commercial plumbing and BFP, turn-key installations, preventative maintenance plans and programs, and more. Our clients span across Ontario and are in a wide range of industries and sectors.

We pride ourselves on rapid emergency response times, complete with competitive labour rates and exceptional high quality craftsmanship. In order to provide exceptional customer service, our service team operates 24 hours a day, 7 days a week, 365 days a year.

Our installation team is a talented group of individuals capable of completing large or small scale new or used equipment installations. We offer a full range of cost effective installation solutions. Our attention to detail and project management allows us to complete projects on time and on budget.

Precision Craftsmanship


  • Reliable, experienced licensed technicians:  G1, 313A, 313D, 308A, TSSA, and have various other health and safety certifications.
  • Maximize your organization’s efficiency with skilled technicians who work in all weather conditions. Callbacks are less than 1%
  • We utilize a primary and secondary service team that enables us to get to know your business and staff. They are proactive and will identify other potential mechanical problems and recommend corrective action plans.


Quality Assurance

  • Well versed in both Auto Quality (ISO) and Food Quality (BRC, SFQ, FS22000, HACCP) standards.
  • Knowledge and awareness of industry trends including Montreal Protocol, federal, and provincial rebate programs. 
  • Our experience with the TSSA allows us to successfully obtain TSSA approval for equipment for which approval has not yet been secured.
  • Your work will be completed in a timely and efficient manner, without risking the safety of our workers, your staff, or facility.

DAEL Thermal’s defined, repeatable quality processes and
commitment to safety works. Our WSIB ratings have
consistently put us in the top of our industry.

Community Involvement

Since we were found in 1982, we have made an ongoing effort to give back to the community by donating, sponsoring, and providing “hands-on” volunteering such as the Habitat for Humanity GTA – Women’s Build. Current donations and sponsorships include:

  • Royal Canadian Legion
  • PRHC Foundation
  • Yee Hong Foundation
  • Habitat for Humanity
  • Mississauga Senators 04 AAA Hockey club
  • Brampton Minor Basketball
  • GMHA Minor Peewee A  hockey team
  • Humber College Trade School Apprenticeship Program

At DAEL Thermal Group every member of our staff is committed to your satisfaction.

A desire to serve and the technical expertise to deliver that service go hand in hand. We service all equipment brands and types in commercial and industrial environments — with a smile, when you need us, 24/7.

Are you interested in joining our team? Learn more by visiting our careers page.


Emergency Breakdown? No problem. Make one call. We do it all.

Available 24-hours a day, 7-days a week, 365 days a year.

Make An Inquiry

Preventative Maintenance

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DAEL Thermal conducted preventative maintenance on the backflow preventer systems of several  Suncor Petro-Canada™ service stations.

During the maintenance program it implemented, DAEL quickly and efficiently corrected any deficiencies discovered and submitted all of the required paperwork to the respective municipalities to ensure each location stayed in compliance. We also proactively provided recommendations on potential plumbing issues.

Ahead of Schedule

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Top secret! Unfortunately we are not at liberty to disclose the name of the base, but suffice it to say we have worked with the federal government on multiple projects including this well-known base. DAEL Thermal provided a turn-key capital project involving the sourcing and installation of two steam boilers which provided heat to various buildings throughout the base.

Due to the early arrival of winter weather, we realized the urgency of the project and were able to complete the project three weeks earlier than scheduled without incurring cost overruns.

Codes & Standards

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We keep up-to-date with knowledge of the TSSA Codes and Standards and an understanding of how they apply to both DAEL and our clients.


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